From 3ec4b496569ac94ddb8411ebb7ea01fb7be17acf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karl=20Yngve=20Lerv=C3=A5g?= <karl.yngve+git@gmail.com>
Date: Tue, 12 Jul 2016 09:06:21 +0200
Subject: [PATCH] Added option for folding of usepackage (#477)

---
 autoload/vimtex/fold.vim | 15 +++++++++------
 doc/vimtex.txt           | 13 +++++++++++++
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/autoload/vimtex/fold.vim b/autoload/vimtex/fold.vim
index 0cb4f18..ad7ed6d 100644
--- a/autoload/vimtex/fold.vim
+++ b/autoload/vimtex/fold.vim
@@ -26,6 +26,7 @@ function! vimtex#fold#init_options() " {{{1
         \   'subsection',
         \   'subsubsection',
         \ ])
+  call vimtex#util#set_default('g:vimtex_fold_usepackage', 1)
 
   " Disable manual mode in vimdiff
   let g:vimtex_fold_manual = &diff ? 0 : g:vimtex_fold_manual
@@ -140,12 +141,14 @@ function! vimtex#fold#level(lnum) " {{{1
   endif
 
   " Fold usepackages
-  if line =~# '^\s*\\usepackage\s*\[\s*\%($\|%\)'
-    let s:usepackage = 1
-    return 'a1'
-  elseif get(s:, 'usepackage', 0) && line =~# '^\s*\]{'
-    let s:usepackage = 0
-    return 's1'
+  if g:vimtex_fold_usepackage
+    if line =~# '^\s*\\usepackage\s*\[\s*\%($\|%\)'
+      let s:usepackage = 1
+      return 'a1'
+    elseif get(s:, 'usepackage', 0) && line =~# '^\s*\]{'
+      let s:usepackage = 0
+      return 's1'
+    endif
   endif
 
   " Fold chapters and sections
diff --git a/doc/vimtex.txt b/doc/vimtex.txt
index 530998f..b1239d8 100644
--- a/doc/vimtex.txt
+++ b/doc/vimtex.txt
@@ -467,6 +467,18 @@ Options~
         \ "subsubsection",
       \ ]
 <
+*g:vimtex_fold_usepackage*
+  Use this option to disable/enable folding of long `\usepackage` lines. The
+  lines must be formatted like this for folding to work properly: >
+
+    \usepackage[
+      option 1,
+      ...,
+      option n
+      ]{name}
+<
+  Default value: 1
+
 *g:vimtex_imaps_enabled*
   Use this option to disable/enable the insert mode mappings.
 
@@ -1584,6 +1596,7 @@ Associated settings:
   |g:vimtex_fold_parts|
   |g:vimtex_fold_sections|
   |g:vimtex_fold_envs|
+  |g:vimtex_fold_usepackage|
 
 ==============================================================================
 INDENTATION                                                     *vimtex-indent*